Answer:
This is because you have created a Credit Memo on this Invoice, but it has not been applied to it yet. You will need to apply this Credit Memo to the Invoice or cancel it, before you can write off this Invoice.
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When we are trying to write off an invoice, we are getting this error:
"The maximum amount of credit that can be created against the invoice is 0. You are attempting to create credit in the amount of 37459. Please resubmit your request in an acceptable range."
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